Iikhrimu zokwenza mhlophe, iimaski zobuso, iiloshini zokhathalelo lolusu, iidayi zeenwele… Kule mihla, kukho iintlobo ngeentlobo zeemveliso zokhathalelo ezithengiswayo kwaye ziyavela ngokungapheliyo, ezithandwa kakhulu ngabathandi bobuhle. Nangona kunjalo, izinto zokhathalelo ekuqaleni zisetyenziselwa ukhathalelo lolusu kunye nobuhle kunye nokucoca ulusu xa zisetyenziswa emzimbeni womntu. Nangona kunjalo, ukhuseleko lwezinto zokhathalelo lubaluleke ngakumbi kunokusebenza kakuhle. Ngaphandle koko, xa umzimba womntu udibana nezinto zokhathalelo ezingaphantsi ezingafanelekiyo, iingozi ezahlukeneyo zomzimba nezengqondo ezifana ne-allergies, ukulahleka kweenwele, ukonakala kwesimo, kunye ne-carcinogenesis zinokwenzeka.

Ngenxa yesi sizathu, amasebe amaninzi e-R&D eenkampani zezithambiso kunye neelabhoratri ezinxulumene namasebe okuhlola umgangatho ziya kuvavanya izithako zezinto zokwenza iimveliso zezithambiso, izinto zokupakisha, iimveliso ezigqityiweyo, kunye neemveliso ezigqityiweyo. Kuphela emva kokuvavanya umgangatho kunye nokhuseleko ngokuhambelana nemigangatho yolawulo lomgangatho efanelekileyo apho isatifiketi sokufaneleka kwemveliso sinokukhutshwa. Kuyabonakala ukuba ukuchongwa kunye nokuvavanywa kwezithambiso kwilabhoratri kube ngumqobo wokuqala wokukhusela impilo nokhuseleko lwabathengi.
Ngoko ke, zeziphi izinto eziphambili ezikuvavanyo lokhuseleko lobuhle?

Kumvelisi wezinto zokuthambisa oqhelekileyo, uvavanyo lwesinyithi esinzima, uvavanyo lweentsholongwane, uvavanyo lokugcina izinto zikhuselekile, uvavanyo lomxholo wezinto ezisebenzayo, kunye nezinye izinto ezingavumelekanga nezithintelweyo zixhaphake kakhulu kwizinto zovavanyo kunye nohlalutyo lwetyhefu. Thatha i-chromium ye-heavy metal trace element njengomzekelo: i-chromium, i-chromic acid, i-chromium yesinyithi, kunye ne-hexavalent chromium azikho ngqo kwizinto zokuthambisa. Nangona kunjalo, kwinkqubo yokuveliswa kunye nophuhliso lwezinto zokuthambisa, kukho izinto ezingcolisayo ezine-chromium kwizikhongozeli zeglasi, ezifana ne-Cr6+. Oku kufuna iilabhoratri ukuba zenze isigqibo kunye nohlalutyo, kwaye emva koko zicebise izisombululo.

Nangona kunjalo, uhambo lokuvavanya umgangatho nokhuseleko lwezinto zokuthambisa elabhoratri alupheleli apha.

Umqobo wesibini ojongene neenkampani zezithambiso kukuba amasebe afanelekileyo olawulo lukarhulumente enza uhlolo olungacwangciswanga kwizithambiso ebezisasazwa ukuqinisekisa uphuhliso olusempilweni nolucwangcisiweyo lwemarike. Umzekelo, ukuba ingaba i-lead, i-arsenic, i-mercury, inani le-bacterial colony, i-p-phenylenediamine, iidayi ezisasazwayo, njl.njl. kwiimveliso zezithambiso zidlula umgangatho, okanye nokuba kukho izinto ezingavumelekanga ezifana ne-meta-phenylenediamine kunye ne-phthalates. Ngamanye amaxesha le misebenzi yovavanyo ikwaphathiswa iilabhoratri zamaziko ovavanyo lomntu wesithathu. Ngokufanayo, oku kufuneka kuqinisekiswe ngovavanyo lweesampuli ngaphambi kokuba ingxelo yokuhlolwa komgangatho inikwe iinkampani zezithambiso kunye neemveliso zazo ngokwemigaqo yomthetho.

Akunzima ukucinga ukuba ukuze ufumane ithuba elibonakalayo kukhuphiswano olukhulu lwemarike, njengoko uphando olutsha kunye nophuhliso lweenkampani zezithambiso luqhubeka lusanda, oku kuthetha ukuba umthwalo womsebenzi welebhu nawo uya kwanda.

Nangona kunjalo, nokuba yilabhoratri yenkampani yokwenza izinto zokuthambisa, ilebhu yesebe likarhulumente, okanye ilebhu yovavanyo lomntu wesithathu, umsebenzi wovavanyo lwezinto zokuthambisa unzima kakhulu, kwaye akunakuphepheka ukwandisa inani lezixhobo zovavanyo ukuze kuphuculwe ukusebenza kakuhle. Ingakumbi ukuqinisekisa ukuchaneka kweziphumo zovavanyo, ukucoceka kweglasi ezisetyenzisiweyo kuvavanyo kufuneka kusonjululwe kuqala. Njengoko sijongene nalo mceli mngeni, indima yeumatshini wokuhlamba iiglasi zelebhuiye yaba yinto ebaluleke ngakumbi nangakumbi. Ngenxa yokubaumatshini wokuhlamba izinto zeglasi ozenzekelayoAyinakubonelela kuphela ngokucoca okukhulu, ngobuchule nangokucokisekileyo kwezinto ezingcolisayo kwiiglasi zelebhu, kodwa ikwakhuselekile kwaye inobuhlobo nokusingqongileyo ngexesha lokusetyenziswa. Idatha efanelekileyo ebhaliweyo inokunceda ekuboneleleni ngesalathiso esisebenzayo xa kuvavanywa umgangatho wezinto zokuthambisa.

Musa ukuvumela ukuhombisa kube yingozi. Susa ukongezwa okungekho mthethweni kwezinto ezingavumelekanga nezithintelweyo, kwaye uqinisekise ukuba iimveliso zokuhombisa ziyasebenza ngokwesayensi, uzinzo kunye nokusebenza kakuhle. Oku kuchaphazela amalungelo kunye nokhuseleko lwabathengi, kwaye kulapho abavelisi kunye nabalawuli bazalisekisa khona izibophelelo zabo kunye noxanduva lwabo. Isitshixo sokhuseleko lwezithambiso sixhomekeke ekuchanekeni kweziphumo zovavanyo lwelebhu. Kuphela kukufumana uhlalutyo lovavanyo lokwenyani kunye nezigqibo apho sinokuthetha khona ngokwenene.